In a method of driving a display panel, a gate signal is outputted to the display panel based on a first control signal. The former includes an engagement structure. Virus andor bacteria are pathogens that can be transported by the disclosed method. After preparing a microscope-specific tree structure of the optical paths which proceeds from an object to be observed and extends from the start of the illumination beam paths to the end of the observation beam paths, the positions of the microscope components in the tree structure and components preceding and succeeding each of the microscope components are determined.